:root {
    --primary-color: #4568dc;
    --primary-gradient: linear-gradient(135deg, #4568dc 0%, #b06ab3 100%);
    --message-user-bg: #e8f0ff;
    --message-bot-bg: #ffffff;
    --border-radius: 12px;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --粉色-主色: #FFB6C1; /* 浅粉色 */
    --粉色-强调: #FF69B4; /* 热粉色 */
    --粉色-辅助: #FFC0CB; /* 淡粉色 */
    --粉色-背景: #FFF0F5; /* 薰衣草淡紫红 */
    --深色-文字: #8B4513; /* 巧克力色，用于深色文字 */
    --浅色-文字: #F08080; /* 亮珊瑚色，用于浅色文字 */
    --玻璃-背景: rgba(255, 182, 193, 0.1); /* 粉色玻璃质感背景 */
    --玻璃-边框: 1px solid rgba(255, 105, 180, 0.2); /* 粉色玻璃质感边框 */
    --阴影-颜色: rgba(255, 105, 180, 0.3); /* 粉色阴影 */
    --过渡-时间: all 0.3s ease-in-out;
}

/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'ZCOOL XiaoWei', system-ui, -apple-system, sans-serif;
}

body {
    background: var(--粉色-背景);
    color: var(--深色-文字);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0;
    margin: 0;
}

.chat-container {
    max-width: 900px;
    width: 100%;
    padding: 0 20px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.header {
    padding: 1.5rem 0;
    text-align: center;
    position: relative;
}

.header h1 {
    font-size: 2.2rem;
    margin-bottom: 0.5rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-family: 'Ma Shan Zheng', cursive;
    font-weight: normal;
}

.header h5 {
    font-size: 0.9rem;
    color: #666;
    font-weight: normal;
    line-height: 1.5;
    max-width: 600px;
    margin: 0 auto;
}

.chat-box {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
    background-color: #f7f9fc;
    border-radius: var(--border-radius);
    border: 1px solid #e0e5ec;
    margin-bottom: 1rem;
    scroll-behavior: smooth;
    display: flex;
    flex-direction: column;
}

.message {
    margin-bottom: 1rem;
    padding: 12px 16px;
    border-radius: var(--border-radius);
    max-width: 80%;
    position: relative;
    box-shadow: var(--shadow);
    animation: fadeIn 0.3s ease;
    word-wrap: break-word;
    display: flex;
    align-items: flex-start;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.user-message {
    background-color: var(--message-user-bg);
    margin-left: auto;
    border-bottom-right-radius: 4px;
    color: #2a4365;
    align-self: flex-end;
}

.bot-message {
    background-color: var(--message-bot-bg);
    margin-right: auto;
    border-bottom-left-radius: 4px;
    color: #2d3748;
    align-self: flex-start;
}

.message-content {
    flex: 1;
    line-height: 1.5;
}

.copy-btn {
    margin-left: 10px;
    padding: 4px 8px;
    font-size: 12px;
    background: transparent;
    border: 1px solid #ddd;
    border-radius: 4px;
    cursor: pointer;
    color: #666;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.copy-btn:hover {
    background: #f0f0f0;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.controls {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    justify-content: center;
}

.btn-clear {
    background-color: #fff;
    color: #666;
    border: 1px solid #ddd;
    padding: 10px 16px;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.9rem;
}

.btn-clear:hover {
    background-color: #f5f5f5;
    border-color: #ccc;
}

.input-container {
    display: flex;
    margin-bottom: 1rem;
    position: relative;
}

.input-text {
    flex: 1;
    padding: 14px 20px;
    border: 1px solid #e0e5ec;
    border-radius: var(--border-radius);
    font-size: 1rem;
    background-color: #fff;
    box-shadow: var(--shadow);
    transition: all 0.2s ease;
}

.input-text:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(69, 104, 220, 0.1);
}

.btn-send {
    padding: 0 20px;
    background: var(--primary-gradient);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    margin-left: 10px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.2s ease;
    box-shadow: var(--shadow);
}

.btn-send:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.toast {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 12px 24px;
    border-radius: 30px;
    z-index: 1000;
    opacity: 1;
    transition: opacity 0.5s;
    font-size: 0.9rem;
}

.toast.error {
    background: rgba(220, 38, 38, 0.9);
}

.toast.fade-out {
    opacity: 0;
}

.feedback-btn {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    height: 3.5rem;
    width: 3.5rem;
    font-size: 0.8rem;
    line-height: 1.2;
    text-align: center;
    color: #fff;
    background: var(--primary-gradient);
    border-radius: 50%;
    text-decoration: none;
    z-index: 18;
    box-shadow: 0px 6px 20px rgba(69, 104, 220, 0.3);
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.feedback-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0px 8px 25px rgba(69, 104, 220, 0.4);
}

.author-link {
    color: #6b4f3a;
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.2s;
    margin-bottom: 0.5rem;
}

.author-link:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

.copyright {
    text-align: center;
    color: #6b4f3a;
    font-size: 0.9rem;
    margin-bottom: 2rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .message {
        max-width: 90%;
    }

    .header h1 {
        font-size: 1.8rem;
    }

    .feedback-btn {
        height: 3rem;
        width: 3rem;
        font-size: 0.7rem;
        bottom: 1rem;
        right: 1rem;
    }
}
.toast {
position: fixed;
bottom: 20px;
left: 50%;
transform: translateX(-50%);
background: rgba(0, 0, 0, 0.7);
color: white;
padding: 10px 20px;
border-radius: 4px;
z-index: 1000;
opacity: 1;
transition: opacity 0.5s;
}

.toast.error {
    background: rgba(255, 0, 0, 0.7);
}

.toast.fade-out {
    opacity: 0;
}

.copy-btn {
    margin-left: 10px;
    padding: 2px 8px;
    font-size: 12px;
    background: #f0f0f0;
    border: 1px solid #ddd;
    border-radius: 3px;
    cursor: pointer;
}

.copy-btn:hover {
    background: #e0e0e0;
}

/* 基础聊天样式 */
#chat-box {
    height: 500px;
    overflow-y: auto;
    padding: 10px;
}

.message {
    margin: 10px;
    padding: 10px;
    border-radius: 5px;
    max-width: 80%;
}

.user-message {
    background-color: #e3f2fd;
    margin-left: auto;
}

.bot-message {
    background-color: #f5f5f5;
    margin-right: auto;
}

.toast {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 10px 20px;
    border-radius: 4px;
    z-index: 1000;
    opacity: 1;
    transition: opacity 0.5s;
}

.toast.error {
    background: rgba(255, 0, 0, 0.7);
}

.toast.fade-out {
    opacity: 0;
}

.copy-btn {
    margin-left: 10px;
    padding: 2px 8px;
    font-size: 12px;
    background: #f0f0f0;
    border: 1px solid #ddd;
    border-radius: 3px;
    cursor: pointer;
}

.copy-btn:hover {
    background: #e0e0e0;
}

/* 基础聊天样式 */
#chat-box {
    height: 500px;
    overflow-y: auto;
    padding: 10px;
}

.message {
    margin: 10px;
    padding: 10px;
    border-radius: 5px;
    max-width: 80%;
}

.user-message {
    background-color: #e3f2fd;
    margin-left: auto;
}

.bot-message {
    background-color: #f5f5f5;
    margin-right: auto;
}
.copyright {
    text-align: center;
    color: #6b4f3a;
    font-size: 0.9rem;
    margin-top: 40px;
}
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-content {
    background: white;
    padding: 20px;
    border-radius: 5px;
    position: relative;
    max-width: 90%;
    max-height: 90%;
}

.close-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    cursor: pointer;
    background: red;
    color: white;
    border: none;
    border-radius: 50%;
    width: 24px;
    height: 24px;
}
#zb{
    text-align: center;
    color: #fff;
    background: var(--primary-gradient);
    border-radius: 5px;
    text-decoration: none;
    z-index: 18;
    box-shadow: 0px 6px 20px rgba(69, 104, 220, 0.3);
    font-weight: bold;
}
#announcement{
    text-align: center;
    color: #fff;
    background: var(--primary-gradient);
    border-radius: 5px;
    text-decoration: none;
    z-index: 18;
    box-shadow: 0px 6px 20px rgba(69, 104, 220, 0.3);
    font-weight: bold;
}
a {
    display: inline-block;
    margin: 0 15px;
    color: #FF0000;
    text-decoration: none;
    transition: color 0.3s ease;
}
a:hover {
    color: #17BBFF;
}

/* 荔枝元素 */
.litchi-icon {
    display: inline-block;
    width: 20px;
    height: 20px;
    margin-right: 5px;
    background: url('litchi-icon.png') center/cover no-repeat; /* 替换为您的荔枝图标路径 */
    vertical-align: middle;
}

/* 统一头部样式 */
header {
    background: linear-gradient(135deg, var(--粉色-强调), var(--粉色-主色));
    color: white;
    padding: 2.5rem;
    text-align: center;
    font-size: 2rem;
    font-weight: 600;
    letter-spacing: 1px;
    position: relative;    overflow: hidden;
    animation: fadeIn 1s ease-in-out;
    box-shadow: 0 4px 8px var(--阴影-颜色);
}

header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.6), transparent);
}

/* 聊天头部样式 */
.chat-header {
    background: var(--玻璃-背景);
    border-bottom: var(--玻璃-边框);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    display: none;
    backdrop-filter: blur(10px);
}

.chat-header h1 {
    font-size: 1.5rem;
    margin: 0;
    color: var(--粉色-强调);
    text-shadow: 0 1px 2px var(--阴影-颜色);
}

.close-chat {
    background: #ff4654;
    color: white;
    border: none;
    padding: 0.6rem 1.2rem;
    border-radius: 30px;
    cursor: pointer;
    font-weight: 500;
    transition: var(--过渡-时间);
    box-shadow: 0 2px 4px var(--阴影-颜色);
}

.close-chat:hover {
    background: #ff1a2c;
}

/* 导航栏样式 */
nav {
    background: var(--玻璃-背景);
    border-bottom: var(--玻璃-边框);
    padding: 1.2rem 0;
    text-align: center;
    box-shadow: 0 4px 6px var(--阴影-颜色);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: var(--过渡-时间);
    backdrop-filter: blur(10px);
}

nav a {
    text-decoration: none;
    color: var(--深色-文字);
    margin: 0 1.8rem;
    font-size: 1.2rem;
    font-weight: 500;
    padding: 0.6rem 1.2rem;
    border-radius: 30px;
    transition: var(--过渡-时间);
    position: relative;
    display: inline-block;
}

nav a:hover {
    background-color: var(--粉色-主色);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 2px 4px var(--阴影-颜色);
}

nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: var(--粉色-强调);
    transition: var(--过渡-时间);
    border-radius: 3px;
}

nav a:hover::after {
    width: 80%;
}

/* 主内容区域 */
main {
    padding: 2rem 0;
}

/* 聊天主区域 */
.chat-main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    background: var(--玻璃-背景);
    z-index: 999;
    height: calc(100vh - 80px);
    overflow-y: auto;
    display: none;
    backdrop-filter: blur(10px);
    border: var(--玻璃-边框);
    border-radius: 15px;
}

/* 信息卡片区域 */
.info-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 2.5rem;
}

.info-card {
    background: var(--玻璃-背景);
    border-radius: 15px;
    padding: 2rem;
    cursor: pointer;
    transition: var(--过渡-时间);
    border: var(--玻璃-边框);
    box-shadow: 0 2px 4px var(--阴影-颜色);
}

.info-card:hover {
    background: rgba(255, 182, 193, 0.2);
    transform: translateY(-5px);
    box-shadow: 0 4px 8px var(--阴影-颜色);
}

.info-card h2 {
    font-size: 1.5rem;
    margin-bottom: 0.8rem;
    color: var(--粉色-强调);
    text-shadow: 0 1px 2px var(--阴影-颜色);
}

.info-card p {
    font-size: 1.1rem;
    line-height: 1.8;
}

/* 聊天框样式 */
.chat-box {
    height: 450px;
    overflow-y: auto;
    background: var(--玻璃-背景);
    border-radius: 15px;
    padding: 1.8rem;
    margin-bottom: 1.8rem;
    border: var(--玻璃-边框);
    box-shadow: 0 2px 4px var(--阴影-颜色);
}

.message {
    padding: 1rem 1.5rem;
    border-radius: 25px;
    margin-bottom: 1rem;
    max-width: 85%;
    clear: both;
    word-wrap: break-word;
    box-shadow: 0 1px 2px var(--阴影-颜色);
}

.user-message {
    background-color: var(--粉色-强调);
    color: white;
    float: right;
    text-shadow: 0 1px 1px var(--阴影-颜色);
}

.bot-message {
    background-color: var(--粉色-辅助);
    color: var(--深色-文字);
    float: left;
}

/* 输入区域 */
.input-container {
    display: flex;
    gap: 1.2rem;
    margin-top: 2.5rem;
}

.input-text {
    flex: 1;
    padding: 1rem 1.5rem;
    border-radius: 35px;
    border: none;
    background: var(--玻璃-背景);
    border: var(--玻璃-边框);
    font-size: 1.1rem;
    transition: var(--过渡-时间);
    color: var(--深色-文字);
    box-shadow: 0 1px 2px var(--阴影-颜色);
}

.input-text:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--粉色-强调);
}

/* 按钮样式 */
.btn-send, .cta-button, .auth-button {
    background: linear-gradient(45deg, var(--粉色-强调), var(--粉色-主色));
    border: none;
    padding: 1rem 1.8rem;
    color: white;
    cursor: pointer;
    transition: transform 0.3s ease;
    border-radius: 35px;
    font-weight: bold;
    text-decoration: none;
    display: inline-block;
    box-shadow: 0 2px 4px var(--阴影-颜色);
}

.btn-send:hover, .cta-button:hover, .auth-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 8px var(--阴影-颜色);
}

.cta-button {
    background: var(--粉色-强调);
    margin-top: 1.8rem;
}

.cta-button:hover {
    background: var(--粉色-主色);
}

.auth-button {
    width: 100%;
    margin-top: 0.8rem;
}

/* 模态框和弹窗 */
.cyber-modal, .popup, .auth-modal {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 10000;
    background: var(--玻璃-背景);
    border: var(--玻璃-边框);
    width: min(90%, 650px);
    padding: 2.5rem;
    box-shadow: 0 2px 4px var(--阴影-颜色);
    animation: hologram 3s infinite;
    border-radius: 15px;
    backdrop-filter: blur(10px);
}

.popup {
    width: 90%;
    height: 80vh;
    z-index: 10001;
}

.auth-modal {
    max-width: 550px;
}

.overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 9999;
}

.close-btn {
    position: absolute;
    top: 1.2rem;
    right: 1.2rem;
    background: #ff4654;
    color: white;
    width: 2.2rem;
    height: 2.2rem;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--过渡-时间);
    box-shadow: 0 2px 4px var(--阴影-颜色);
}

.close-btn:hover {
    transform: rotate(90deg);
}

/* 注册/登录表单样式 */
.auth-form {
    display: flex;
    flex-direction: column;
    gap: 1.8rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.form-group label {
    font-size: 1.2rem;
    color: var(--粉色-强调);
    text-shadow: 0 1px 2px var(--阴影-颜色);
}

.form-group input {
    padding: 1rem 1.2rem;
    border-radius: 10px;
    border: none;
    background: var(--玻璃-背景);
    border: var(--玻璃-边框);
    color: var(--深色-文字);
    font-size: 1.1rem;
    transition: var(--过渡-时间);
    box-shadow: 0 1px 2px var(--阴影-颜色);
}

.form-group input:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--粉色-强调);
}

/* 验证码输入框 */
.verification-container {
    display: flex;
    gap: 0.6rem;
    align-items: center;
}

.verification-code {
    flex: 1;
}

.get-verification-code {
    background: var(--粉色-主色);
    color: white;
    border: none;
    padding: 1rem 1.2rem;
    border-radius: 10px;
    font-size: 1.1rem;
    cursor: pointer;
    transition: var(--过渡-时间);
    white-space: nowrap;
    box-shadow: 0 1px 2px var(--阴影-颜色);
}

.get-verification-code:hover {
    background: var(--粉色-强调);
    color: white;
}

.auth-submit {
    background: linear-gradient(45deg, var(--粉色-强调), var(--粉色-主色));
    color: white;
    border: none;
    padding: 1rem;
    border-radius: 10px;
    font-size: 1.2rem;
    cursor: pointer;
    transition: var(--过渡-时间);
    margin-top: 1.2rem;
    box-shadow: 0 2px 4px var(--阴影-颜色);
}

.auth-submit:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 8px var(--阴影-颜色);
}

.auth-switch {
    text-align: center;
    margin-top: 1.5rem;
    font-size: 1.1rem;
    color: var(--粉色-强调);
    text-shadow: 0 1px 2px var(--阴影-颜色);
}

.auth-switch a {
    color: var(--粉色-主色);
    text-decoration: none;
    transition: var(--过渡-时间);
}

.auth-switch a:hover {
    text-decoration: underline;
}

/* 英雄区域 */
.hero {
    text-align: center;
    background: linear-gradient(rgba(255,182,193,0.7), rgba(255,105,180,0.7)), url('https://via.placeholder.com/1920x1080.png?text=Litchi+Tech') center/cover no-repeat;
    color: white;
    padding: 8rem 2rem;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 8px var(--阴影-颜色);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, transparent 0%, rgba(255,182,193,0.5) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 850px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 4rem;
    margin: 0;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 1.8rem;
    text-shadow: 0 3px 6px var(--阴影-颜色);
    transition: var(--过渡-时间);
}

.hero p {
    font-size: 1.6rem;
    margin: 1.8rem 0;
    font-weight: 300;
    text-shadow: 0 2px 4px var(--阴影-颜色);
    transition: var(--过渡-时间);
}

.hero:hover h1, .hero:hover p {
    transform: translateY(-10px);
}

/* 内容区块 */
.section {
    padding: 3.5rem 2.5rem;
    margin: 2.5rem auto;
    max-width: 1250px;
    background: var(--玻璃-背景);
    border: var(--玻璃-边框);
    border-radius: 15px;
    box-shadow: 0 2px 4px var(--阴影-颜色);
    text-align: center;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInSection 1s ease-in-out forwards;
    backdrop-filter: blur(10px);
}

.compatibility, .contact-info, .faq-section {
    background-color: transparent;
    padding: 3.5rem 0;
    border-radius: 0;
    color: var(--深色-文字);
    box-shadow: none;
}

/* 产品描述 */
.product-description {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 3.5rem;
    text-align: left;
    transition: var(--过渡-时间);
    flex-wrap: wrap;
    margin: 2.5rem 0;
}

.product-description:hover {
    transform: scale(1.02);
}

.product-description img {
    width: 100%;
    max-width: 450px;
    border-radius: 18px;
    box-shadow: 0 2px 4px var(--阴影-颜色);
    transition: var(--过渡-时间);
}

.product-description img:hover {
    transform: scale(1.03);
    box-shadow: 0 4px 8px var(--阴影-颜色);
}

.product-info {
    flex: 1;
    min-width: 350px;
    color: var(--深色-文字);
}

.product-info h3 {
    font-size: 2rem;
    margin-bottom: 1.8rem;
    color: var(--粉色-强调);
    text-shadow: 0 1px 2px var(--阴影-颜色);
}

.product-info ul {
    list-style-type: none;
    margin: 1.8rem 0;
}

.product-info li {
    margin-bottom: 1.2rem;
    padding-left: 1.8rem;
    position: relative;
    text-align: left;
    font-size: 1.1rem;
}

.product-info li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--粉色-强调);
    font-weight: bold;
    text-shadow: 0 1px 2px var(--阴影-颜色);
}

/* 平台兼容性图标 */
.platform-icons {
    display: flex;
    justify-content: center;
    gap: 2.5rem;
    margin: 2.5rem 0;
    flex-wrap: wrap;
}

.platform-icon {
    width: 90px;
    height: 90px;
    background: var(--玻璃-背景);
    border: var(--玻璃-边框);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 4px var(--阴影-颜色);
    transition: var(--过渡-时间);
}

.platform-icon:hover {
    transform: translateY(-5px) scale(1.1);
    box-shadow: 0 4px 8px var(--阴影-颜色);
}

.platform-icon img {
    width: 55px;
    height: 55px;
    object-fit: contain;
}

/* FAQ部分 */
.faq-title {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 2.5rem;
    color: var(--粉色-强调);
    text-align: center;
    text-shadow: 0 1px 2px var(--阴影-颜色);
}

.faq-container {
    max-width: 850px;
    margin: 0 auto;
}

.faq-item {
    margin: 1.2rem 0;
    text-align: left;
    cursor: pointer;
    font-size: 1.2rem;
    padding: 1.2rem;
    background: var(--玻璃-背景);
    border: var(--玻璃-边框);
    border-radius: 10px;
    transition: var(--过渡-时间);
    box-shadow: 0 2px 4px var(--阴影-颜色);
    position: relative;
    overflow: hidden;
}

.faq-item:hover {
    background-color: var(--粉色-强调);
    color: white;
}

.faq-item::after {
    content: '+';
    position: absolute;
    right: 1.2rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.6rem;
    transition: var(--过渡-时间);
}

.faq-item.active::after {
    content: '-';
}

.faq-answer {
    display: none;
    padding: 1.2rem;
    background-color: rgba(255,182,193,0.05);
    border-radius: 0 0 10px 10px;
    margin-top: 1.2rem;
    animation: fadeInAnswer 0.3s ease-in-out;
}

/* 标题样式 */
.section-title {
    font-size: 3rem;
    margin-bottom: 1.8rem;
    color: var(--粉色-强调);
    position: relative;
    display: inline-block;
    text-shadow: 0 1px 2px var(--阴影-颜色);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 90px;
    height: 4px;
    background: var(--粉色-强调);
    border-radius: 4px;
}

/* 页脚样式 */
footer {
    background: var(--玻璃-背景);
    border-top: var(--玻璃-边框);
    color: var(--深色-文字);
    text-align: center;
    padding: 2.5rem;
    position: relative;
    backdrop-filter: blur(10px);
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--粉色-强调), var(--粉色-主色));
}

.footer-link {
    color: var(--粉色-强调);
    text-decoration: none;
    margin: 0 1.2rem;
    transition: var(--过渡-时间);
}

.footer-link:hover {
    color: var(--粉色-主色);
    text-decoration: underline;
}

.copyright {
    margin-top: 1.5rem;
    font-size: 1rem;
}

/* 动画效果 */
@keyframes fadeIn {
    0% { opacity: 0; transform: translateY(-20px); }
    100% { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInSection {
    0% { opacity: 0; transform: translateY(20px); }
    100% { opacity: 1; transform: translateY(0); }
}

@keyframes hologram {
    0%, 100% { opacity: 0.95; filter: hue-rotate(0deg); }
    50% { opacity: 1; filter: hue-rotate(10deg); }
}

@keyframes fadeInAnswer {
    0% { opacity: 0; transform: translateY(-10px); }
    100% { opacity: 1; transform: translateY(0); }
}

/* 延迟动画 */
.delay-1 { animation-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; }
.delay-3 { animation-delay: 0.6s; }

/* 响应式设计 */
@media (max-width: 768px) {
    .message {
        max-width: 90%;
    }

    .header h1 {
        font-size: 1.7rem;
        padding: 2rem;
    }

    .chat-header h1 {
        font-size: 1.3rem;
    }

    nav a {
        margin: 0 0.8rem;
        font-size: 1.1rem;
        padding: 0.5rem;
    }

    .hero h1 {
        font-size: 3rem;
    }

    .hero p {
        font-size: 1.4rem;
    }

    .section {
        padding: 2.5rem 1.8rem;
    }

    .section-title {
        font-size: 2.5rem;
    }

    .product-description {
        flex-direction: column;
        gap: 1.8rem;
    }

    .product-description img {
        max-width: 100%;
    }

    .input-container {
        flex-direction: column;
    }

    .btn-send {
        width: 100%;
    }

    .info-section {
        grid-template-columns: 1fr;
    }

    .chat-box {
        height: 350px;
    }

    .chat-main {
        top: 60px;
        height: calc(100vh - 60px);
    }

    .auth-modal {
        width: 95%;
        padding: 1.8rem;
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--粉色-背景);
}

::-webkit-scrollbar-thumb {
    background: var(--粉色-强调);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--粉色-主色);
}